how to replace the light in an in-ground pool?

There is a screw near the bottom of the trim ring. Remove that and the light should have enough slack on the power cord to reach the pool deck. Then you remove the face plate to get at the bulb.

Keep in mind, you will have a choice of 300 or 500 watt bulbs. If you change the wattage of the bulb you also need to change the transformer that feeds it.

All this should take place without having to get into the pool. The operative word being "should".

At some point, check to be sure the transformer is getting power. That it is putting out power. That the old bulb is indeed bad. You could have a problem anywhere along the circuit.

good luck.

Turn off ALL power to the pool. Remove light fixture, replace lamp, reinstall fixture. The light fixture is a waterproof sealed unit. http://www.inyopools.com/how_to_bulbreplacement.as...